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United States Patent |
5,301,630
|
Genovese
,   et al.
|
April 12, 1994
|
Inflatable rescue ramp
Abstract
A rescue ramp (10) for use by a watercraft (11) includes a laterally
extending first inflatable tube member (14) attachable to the watercraft
(11). Second spaced inflatable tube members (15) are connected at one end
to and extend longitudinally from the ends of the first tube member (14).
A third inflatable tube member (16) is connected between the second tube
members (15) near the other end thereof and is adapted to be positioned in
the water. A ramp (17) is connected to the first and second tube members
(14, 15) so that when the rescue ramp (10) is inflated and attached to the
watercraft (11), a person may traverse from the water to the watercraft
(11) or from the watercraft (11) to the water. The first tube member (14)
is attached to the watercraft (11) by means of a girt bar (23) releasably
mounted on the watercraft (11). The girt bar (23) is connected to a first
flap (26) which is detachably connected to a second flap (20) attached to
the first tube member (14).
Inventors:
|
Genovese; David E. (Peninsula, OH);
Ryan, III; John F. (Houston, TX)
|
Assignee:
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SMR Technologies, Inc. (Sharon Center, OH)
|
Appl. No.:
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016144 |
Filed:
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February 5, 1993 |
Current U.S. Class: |
114/375; 182/48; 244/905; 441/80 |
Intern'l Class: |
B63B 023/00 |
Field of Search: |
441/39,82,83,84,80
114/375
244/905
182/48
|
References Cited
U.S. Patent Documents
1128072 | Feb., 1915 | Steinmetz.
| |
2896564 | Jul., 1959 | Wright | 114/262.
|
2955299 | Oct., 1960 | Ingram, Jr.
| |
3606939 | Sep., 1971 | Summer et al. | 244/905.
|
3621383 | Nov., 1971 | Rush | 244/905.
|
3712417 | Jan., 1973 | Chacko et al. | 244/905.
|
3891053 | Jun., 1975 | Burton | 182/97.
|
4031583 | Jun., 1977 | Phillips, II.
| |
4332049 | Jun., 1982 | Fisher | 244/905.
|
4434870 | Mar., 1984 | Fisher | 244/905.
|
4989691 | Feb., 1991 | Wilkerson et al. | 182/70.
|
Other References
Markus Lifenet advertisement, Markus Lifenet Ltd., Sweden, undated.
|
Primary Examiner: Sotelo; Jesus D.
Attorney, Agent or Firm: Renner, Kenner, Greive, Bobak, Taylor & Weber
Claims
We claim:
1. A rescue ramp for a watercraft comprising a laterally extending first
inflatable tube member, means to at least temporarily connect said first
tube member to the watercraft, second spaced inflatable tube members
having one end fluidly connected to said first tube member and extending
generally longitudinally away from said first tube member, a third tube
member fluidly connected between and below said second tube members near
the other end thereof and adapted to be positioned in the water when said
first tube member is connected to the watercraft, and ramp means connected
to and between said first and second tube members, said ramp means being
the only connection between said first and second tube members at said
other end thereof so that a person may readily move onto said ramp means
from the water and thereafter may traverse said ramp means from the water
to the watercraft or from the watercraft to the water.
2. A rescue ramp according to claim 1 further comprising means to inflate
said tube members.
3. A rescue ramp according to claim 2 wherein said means to inflate
includes a pressurized canister carried by said first tube member.
4. A rescue ramp according to claim 3 wherein said means to inflate
includes a valve positioned in at least one of said second tube members.
5. A rescue ramp according to claim 4 wherein said means to inflate
includes an additional valve positioned in said first tube member to
pressurize said tube members as necessary.
6. A rescue ramp according to claim 1 wherein said means to connect
includes a bar member attachable to the watercraft and means to attach
said bar member to said first tube member.
7. A rescue ramp according to claim 6 wherein said means to attach includes
a first flap member carrying said bar member and a second flap member
attached to said first tube member, said first and second flap members
being detachably connectable to each other.
8. A rescue ramp according to claim 1 further comprising first attachment
means positioned at said other end of said second tube members and second
attachment means positioned on said first tube member, said second tube
members being adapted to be folded generally longitudinally in half so
that said first attachment means can engage said second attachment means.
9. A rescue ramp according to claim 8 wherein said means to connect
includes a flap member generally centrally positioned along said first
tube member, said first tube member being adapted to be folded such that
it is of a lateral extent approximating the length of said flap member
while at the same time positioning said second tube members adjacent to
each other.
10. A rescue ramp according to claim 1 further comprising means positioned
on said ramp means to assist the person traversing said ramp means.
11. A rescue ramp according to claim 1 wherein said tube members are
constructed of a urethane coated nylon woven fabric.
12. A rescue ramp according to claim 1 further comprising life lines
mounted on said second tube members on the sides thereof opposite said
ramp means.
13. A rescue ramp according to claim 1 further comprising pouch means
formed in at least one said second tube member to carry an accessory to
assist the person to said ramp means.
14. A rescue ramp according to claim 1 further comprising means to
illuminate said ramp means.
15. A rescue ramp according to claim 14 wherein said means to illuminate
includes at least one light positioned on each said second tube member and
a battery connected to each said light and positioned on said third tube
member so as to be in contact with the water.
16. A rescue ramp for a watercraft comprising a laterally extending first
inflatable tube member, means to at least temporarily connect said first
tube member to the watercraft, second spaced inflatable tube members
having one end connected to said first tube member and extending generally
longitudinally away from said first tube member, a third tube member
connected between said second tube members near the other end thereof and
adapted to be positioned in the water when said first tube member is
connected to the watercraft, ramp means connected to said first and second
tube members, and means positioned on said ramp means including a
plurality of hand/foot holds so that a person may be assisted in
traversing said ramp means from the water to the watercraft or from the
watercraft to the water.
17. A rescue ramp for a watercraft comprising a laterally extending first
inflatable tube member, means to at least temporarily connect said first
tube member to the watercraft, second spaced inflatable tube members
having one end connected to said first tube member and extending generally
longitudinally away from said first tube member, a third tube member
connected between said second tube members near the other end thereof and
adapted to be positioned in the water when said first tube member is
connected to the watercraft, ramp means connected to said first and second
tube members so that a person may traverse said ramp means from the water
to the watercraft or from the watercraft to the water, and means
positioned on said second tube members to assist the person to get on said
ramp means.
18. A rescue ramp according to claim 17 wherein said means positioned on
said second tube members includes a hand-hold mounted on each said second
tube member near said other end thereof and above said ramp means.
19. A rescue ramp for a watercraft comprising a laterally extending first
inflatable tube member, means to at least temporarily connect said first
tube member to the watercraft, second spaced inflatable tube members
having one end connected to said first tube member and extending generally
longitudinally away from said first tube member, a third tube member
connected between said second tube members near the other end thereof and
adapted to be positioned in the water when said first tube member is
connected to the watercraft, ramp means connected to said first and second
tube members so that a person may traverse said ramp means from the water
to the watercraft or from the watercraft to the water, and means on said
second tube members to attach the rescue ramp to a second watercraft.
20. A rescue ramp according to claim 19 wherein said means on said second
tube members includes a D-ring mounted at said other end of each said
second tube member.
Description
TECHNICAL FIELD
This invention relates to an inflatable rescue ramp which may be carried in
an uninflated, stowed condition by a rescue craft or other watercraft.
More particularly, this invention relates to a rescue ramp which, after
being attached to the watercraft and inflated, extends into the water so
that a person stranded in the water can move up the ramp and into the
watercraft or a person from the watercraft can move down the ramp to
assist a person in the water, as necessary.
BACKGROUND ART
The rescuing of people stranded in a body of water, particularly turbulent
waters encountered in the oceans of the world, is not a simple task. In
many environments, such as at off-shore drilling rigs, motorized boats are
held by davits to be deployed in the event of an emergency, such as an
explosion at the site, which might cause many people to be stranded in the
water. Upon such a disaster, it is usually not difficult for the rescue
craft to arrive at the location of the stranded person or persons, but
rather the problem is boarding the person into the craft. Such a procedure
is compounded not only if the person is unconscious or injured, but also
if turbulent water is prevalent.
Present known devices of rescuing a person from the sea are not
satisfactory for all encountered circumstances. One of the simplest known
devices is a rope-like ladder which is attached to the boat at its hatch
or portal and merely thrown in the water so that the person to be rescued
might climb into the boat. While such may be satisfactory in calm seas, in
turbulent situations it is not only difficult to climb the undulating
ladder, but also it is highly likely that the person could be injured, as
by striking his head on the gunnel or ledge below the hatch. Moreover, the
ladder is totally useless if the person to be rescued is injured or
unconscious. In such situations, the rescue boat must be manned with
several people, some of whom must traverse down the ladder to assist the
person to and up the ladder, while others in the craft assist to pull the
person on board, while all the time trying to avoid contact with the
undulating gunnel.
Another prior art device which has been utilized is a net-like structure
which is thrown toward the person to be rescued. If conscious, he may then
either hold onto or lay on the net while being pulled into the craft. Such
a device suffers from the same problems as does the aforementioned ladder
and is simply not a convenient and safe manner in which to rescue the
panicked person.
A variety of the net-like structure just described involves a slat-like
runner which is thrown into the water. In the operation of this device,
the person is positioned on the structure and essentially rolled up into
the craft. However, it is almost mandatory that a person from the craft be
in the water to utilize this system of rescue, and in addition, at least
two people in the craft must be employed to pull the person into the
craft.
Thus, the need exists for a system which will allow the conscious person to
easily enter the rescue craft on his own power, and a system which
accommodates the facile assistance of an unconscious or injured person
into the craft.
DISCLOSURE OF THE INVENTION
It is thus a primary object of the present invention to provide an
inflatable rescue ramp which is attachable to a rescue craft and which
permits a conscious person stranded in the water to readily climb the ramp
into the craft without injury.
It is another object of the present invention to provide a rescue ramp, as
above, which can also be utilized to easily transport an unconscious or
injured person from the water onto the craft.
It is a further object of the present invention to provide a rescue ramp,
as above, which is operable in turbulent water without the risk of injury
to the stranded person as he enters the craft.
It is an additional object of the present invention to provide a rescue
ramp, as above, which when not in use can be stowed in a small area within
the rescue craft.
It is yet another object of the present invention to provide a rescue ramp,
as above, which can be attached to another rescue craft so that people can
traverse from one rescue craft to another.
It is a still further object of the present invention to provide a rescue
ramp, as above, which can be readily detached from the rescue craft and
converted into an inflated buoyancy platform.
These and other objects of the present invention, as well as the advantages
thereof over existing prior art forms, which will become apparent from the
description to follow, are accomplished by the improvements hereinafter
described and claimed.
In general, a rescue ramp for a watercraft made in accordance with the
concepts of the present invention includes a laterally extending first
tube member which can be at least temporarily attached to the watercraft.
One end of second spaced inflatable tube members are connected to the
first tube member and extend generally longitudinally away from the first
tube member. A third inflatable tube member is connected between the
second tube members near the other end thereof and is adapted to be
positioned in the water when the first tube member is connected to the
watercraft. A ramp is connected to the first and second tube members so
that a person may traverse from the water to the watercraft or from the
watercraft to the water.
A preferred exemplary inflatable rescue ramp incorporating the concepts of
the present invention is shown by way of example in the accompanying
drawings without attempting to show all the various forms and
modifications in which the invention might be embodied, the invention
being measured by the appended claims and not by the details of the
specification.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a somewhat schematic fragmented perspective view of an inflated
rescue ramp according to the concepts of the present invention shown
attached to a rescue craft and in the water.
FIG. 2 is a bottom plan view of the rescue ramp shown in FIG. 1.
FIG. 3 is a top plan view of the rescue ramp shown in FIG. 1.
FIG. 4 is a side elevational view of the rescue ramp shown in FIG. 1.
FIG. 5 is a schematic top plan representation depicting the manner in which
an uninflated rescue ramp according to the concepts of the present
invention can be folded for storage.
PREFERRED EMBODIMENT FOR CARRYING OUT THE INVENTION
A rescue ramp made in accordance with the concepts of the present invention
is generally indicated by the numeral 10 and shown in FIG. 1 as being
attached to a rescue craft 11. Craft 11 can be any type of water
navigating vessel, with the craft 11 shown having the typical hatches 12
and gunnel or shelf 13 to which ramp 10 can be attached, as will
hereinafter be described.
Ramp 10 includes a plurality of interconnected inflatable tubes, now to be
described, which are preferably made of a sturdy urethane coated square
woven nylon fabric and of a size of about sixteen inches in diameter.
Thus, ramp 10 includes a header tube 14 interconnected at its ends with
generally parallel side tubes 15 thereby forming, with tube 14, a
generally U-shaped plan profile for ramp 10. Side tubes 15 are preferably
spaced about three feet apart. A lower cross tube 16 extends between and
below side tubes 15 and not only serves to stabilize tubes 15, maintaining
them in their intended parallel disposition, but also serves as the
flotation member for ramp 10. Thus, as shown in FIG. 1, with ramp 10 in
use, cross tube 16 is floating in the water.
A ramp fabric 17 tautly extends between side tubes 15, being attached
thereto at the bottom thereof, and is likewise attached to the bottom of
header tube 14 to form a ramp walk surface. The ramp fabric 17 can be of
any urethane coated material capable of holding the weight preferably of
up to three people and could, if desired, also include tube members spaced
along the fabric. When rescue ramp 10 is in the water, ramp fabric 17 is
preferred to be at an angle of twelve degrees to seventeen degrees, or at
least below the recognized angle of twenty-two degrees considered suitable
for walking. Thus, ramp fabric 17 is intended to be walked upon as a
person, stranded in the water, utilizes rescue ramp 10 to board craft 11
or, as necessary, for a person to traverse down from craft 11 to get into
the water.
The outer ends of side tubes 15 can be provided with tabs 18 made of an eye
and loop synthetic material which adhere to another similar material when
pressed together, such as that sold under the trademark VELCRO.
Complementary VELCRO tabs 19 are positioned at the inner side of tube 14
as shown in FIGS. 2 and 3. When rescue ramp 10 is not inflated, it can be
folded and stored in craft 11 in a compact condition. The manner in which
ramp 10 is folded is depicted in FIG. 5. There, ramp 10 is shown as
already having been folded once, along line A, thus essentially dividing
its length in half. As such, tubes 15 are folded generally centrally
thereof and tabs 19 are attached to tabs 18 to maintain that condition.
Then, the width of ramp 10, that is, of tube 14, is folded in thirds along
lines B, so that tubes 15 are adjacent to each other. A final fold along
line C renders ramp 10 compact for storing in a valise or other container
on craft 11.
A fabric flap 20 is attached to the inner side of tube 14, generally
centrally thereof, and is provided with a plurality of apertures 21
therein. Flap 20 is preferably of such a width such that when rescue ramp
10 is folded, as just described, it is folded to a width approximating
flap 20 which is not at all folded. Flap 20, in a manner to be hereinafter
described, is adapted to be attached to a girt bar assembly generally
indicated by the numeral 22 and shown in FIGS. 2 and 3. Girt bar assembly
22 includes a girt bar 23 which can be attached to craft 11, at any
desired location such as gunnel 13, as by providing brackets 24 extending
outwardly therefrom. Since girt bar 23 is stored With ramp 10 when not in
use, it is preferable that girt bar 23 be attachable to brackets 24 by any
quick connect/disconnect type of attachment as would be well known to one
skilled in the art.
Girt bar 23 is received within a loop 25 formed in one end of a fabric flap
26 which is part of girt bar assembly 22. The other end of flap 26 is
provided with a plurality of apertures (not shown) which correspond to
apertures 21 of flap 20 of ramp 10. Flap 26 may thereby be attached to
flap 20 by any conventional quick disconnect method such as looping a
string member through apertures 21 and the apertures formed in flap 26 in
what is known as a "daisy-chain" type connection. Such a connection, or
its equivalent, permits a quick disconnect feature such that, if
necessary, the inflated ramp 10 can be disconnected from the girt bar
assembly 22, and thus craft 11, during a rescue operation. Ramp 10 can
itself then be used as a separate buoyancy platform, as may be desired.
In order to deploy ramp 10, it and the attached girt bar assembly are
removed from the storage area on craft 11 and girt bar 23 is attached to
its holding brackets 24. Then, with ramp 10 in its folded condition as
previously described, it can be inflated. In this regard a canister 27
containing air or nitrogen charged to approximately 3000 psi can be
conveniently carried in a fabric pouch 28 formed below and normally
depending from tube 14 as shown in FIGS. 2 and 4. Ramp 10 can be therefore
quickly inflated by removing canister 27 and attaching it to an inflation
valve fitting 29 (FIG. 3) positioned in one tube 15 at a location such
that it will be exposed when ramp 10 is folded. By thereby internally
pressurizing tubes 14, 15 and 16, ramp 10 will unfold, with the unfolding
process being somewhat controlled by the connection of VELCRO 18 to VELCRO
19; that is, this connection regulates the speed of, and the pressure
required for, the unfolding as ramp 10 goes through the reverse of the
folding steps described with respect to FIG. 5. When ramp 10 is
sufficiently pressurized to overcome the VELCRO connection, tubes 15
unfold and ramp 10 is thus in the inflated, deployed condition shown in
FIG. 1. At this time the typical internal pressure within tubes 14, 15 and
16 is preferably on the order of two and one-half psi. During use for any
reason should it be desired or necessary to add air pressure internally of
ramp 10, a topping-off valve 30 (FIG. 3) can be provided in tube 14 for
that purpose.
A ramp 10, as just described, can thus be employed to rescue a person
stranded in the water. To that end, if the person is conscious, he may
merely walk or crawl up upon ramp fabric 17 and into craft 11 or, if
necessary, someone on craft 11 can traverse down ramp fabric 17 and into
the water to assist the stranded, and possibly injured or unconscious
person.
In addition, rescue ramp 10 may be provided with other accessory-like items
to assist the stranded person and otherwise make ramp 10 more readily
usable. For example, life lines 31 may be sewn or tacked, as at 32, to the
outside of tubes 15 so that if the stranded person is positioned at the
side of rescue ramp 10, he may readily grab onto lines 31 and maneuver
himself onto ramp fabric 17.
For additional assistance when getting onto or traversing ramp fabric 17,
hand-hold assemblies 33, preferably made of a fabric material, may be
positioned on the inside of the outer end of each tube 15, and additional
hand-hold/foot-hold assemblies 34 may be attached to and spaced along ramp
fabric 17. If the stranded person needs some assistance to get to ramp 10,
a heaving line with a quoit at the end thereof can be positioned in a
pouch 35 fabricated in one of the tubes 15 so that it is readily available
to be thrown into the water toward the stranded person.
At times it may be desirable to attach rescue ramp 10 to another craft so
that people on craft 11 could disembark from craft 11 to another. To that
end, D-ring assemblies 36 (FIG. 1) can be mounted at the outer end of
tubes 15. If it is desired to transport persons from craft 11 to another,
the other craft may merely hook on to D-rings 36 and people can walk on a
now generally horizontal ramp fabric 17 from one craft to another.
When operating at night, it is often desirable to illuminate ramp 10 with
lane lights. For that purpose, at least one light 37 can be mounted on the
top of each tube 15. A power wire 38 extending from each light 37 can be
taped or otherwise adhered to the side of tubes 15, and a water activated
battery 39 (FIG. 4) can be provided at the other end of each wire 38 and
mounted on the bottom of tube 16. Thus, when in the water, batteries 39
will illuminate lights 37 to readily identify the location of rescue ramp
10.
It should thus be evident that an inflatable rescue ramp constructed in
accordance with the concepts of the present invention, as described
herein, and used as described herein, accomplishes the objects of the
present invention and otherwise improves the art.
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